HomeMy WebLinkAboutWetland Report - MEP Reports - 5/22/2024 RECEIVED
a
MAY 2 2 2024
615 W. Alder Street
Wetland o Re ft
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Parcel: 22125-42-90062
XXXX E North Island Dr
Shelton, WA 98584
Kitsap County
Report prepared for:
Meagan & Peter Ross
2120 Beverly Beach Dr NW
Olympia, WA 98502
Prepared by:
Rob Nagel
PO Box 2466
Shelton, WA 98584
rob@arctos-environmental.com
(360) 229-3118
Arc,+os E.nvironmen+ol LLG
Project: 2023-WR-007
December 2023
Table of Contents
Tableof Contents............................................................................... i
Listof Figures..................................................................................... i
Overview ...........................................................................................1
Property Description & Project Background........................................2
Wetland Delineation & Rating............................................................3
Summary ...........................................................................................6
References.........................................................................................7
Appendix: Data Forms, Rating Figures, & Site Photos..........................8
List of Figures
Figure 1:Vicinity map of the project. ...........................................................................................................2
Figure 2:Screen capture of the Mason County Resource Ordinance Table 8.52.110(D) showing wetland
buffers for category III wetlands. .................................................................................................4
Figure 3:Screen Capture of Washington State Department of Ecology's Water Quality Atlas with 303d
waterdesignations visible..........................................................................................................24
Figure 4:Screen Capture of Washington State Department of Ecology Water Quality Atlas with TMDL
water quality improvement projects data visible. .....................................................................24
Figure 5:Screen capture of the National Wetland Inventory(NWI)online mapper for this area.............25
Figure 6:Screen capture of the USDA web soil survey for this area..........................................................25
Figure 7:Screen capture of the WA Natural Heritage Program Data Explorer Map for this area (formally
the WA DNR Wetlands of High Conservation Value Map. .........................................................26
Figure 8:Screen capture of the WDFW Priority Habitats and Species web mapper for this area.............26
Figure 9: Map of the land use intensity 1km around the wetland. ............................................................27
Figure 10: Map showing the different Cowardin cover classes and hydroperiods within the wetland. The
yellow line is 150ft from the wetland edge for reference and scoring the functions of the
wetland. The two streams on the north end of the wetland are the wetland outlets. .............28
Project: 2023-WR-007 December 2023 Arc+os Environmental LLG
Wetland Report
22125-42-90062
XXXX E North Island Dr
Shelton, WA 98584
Overview
This report details the wetland delineation and rating of a Depressional wetland
located on the north end of Harstine Island, in Mason County. The wetland is
formed from surface and ground water inundating a topographic depression at a
frequency and duration during the growing season sufficient to support the
development of hydric soils and the growth of hydrophytic vegetation. The
wetland was rated a Category III wetland based on its score for Functions, with a
Habitat score of 7 and a total score of 19. The buffer for this wetland is 110ft with
a 125ft Structure Setback for moderate intensity land uses based on the Mason
County Resource Ordinance (Table 8.52.110(D)). The portion of the wetland
within the subject lot was delineated in the field and flagged with bright green
flagging. The buffer should be measured horizontally from the flagged edge in the
field.
A recently installed driveway, which is the subject of a code violation on the
property, occupies an estimated ±250ft2 within the wetland, and another
±2,000ft2 within the wetland buffer. A forthcoming Habitat Management Plan will
propose mitigation measures to address the driveway impacts and an alternate
access route, which avoids direct wetland impacts.
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Project: 2023-WR-007 December 2023 Arc+os Environmental LLG
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Figure 1:Vicinity map of the project.
Property Description & Protect Background
The parcel is 2.01 acres in size and located in section 25, Township 21 North,
Range 2 West. A "grandfathered" road provides access from E North Island Dr to
the west end of the property. The access road was built on top of a large
depressional wetland and currently bisects the wetland. Two culverts provide a
hydrologic connection between the two sides of the bisected wetland. High water
levels are matched on both sides of the wetland and water flows back and forth
through the culverts. Typical wetland adapted vegetation growing within the
wetland includes red alder (Alnus rubra), Oregon ash (Fraxinus latifolia),
salmonberry (Rubus spectabilis), and slough sedge (Carex obnupta). The upland
vegetation on the property immediately adjacent to the wetland is characterized
by sword fern (Polystichum munitum), Salal (Gaultheria shallon), and bracken fern
(Pteridium aquilinum).
A driveway to access the subject parcel was installed recently by the previous
owner. The driveway was placed across a narrow portion of the wetland with a
±6-inch pipe installed as a culvert. The current property owners received a County
Notice of Violation for the activity, and this report is the first step in the response
to that violation. The driveway consists of crushed rock occupying ±250ft2 to cross
the wetland, and another ±2,000ft2 within the 110ft wetland buffer.
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Project: 2023-WR-007 December 2023 Arc-to-, Environmental LLG
Wetland Delineation & Ratiniz
The wetland was delineated using the 1987 U.S. Army Corps of Engineers (USACE)
Wetland Delineation Manual and the Western Mountains, Valleys, and Coast
Region Regional Supplement Version 2.0 (using updated plant and soil
designations from USDA and MRCS). The wetland meets all three required
indicators of hydrophytic vegetation, hydric soils, and hydrology. One pair of
wetland determination sample plots were used to confirm the wetland boundary
findings in the field. The boundary between the wetland and surrounding uplands
is well defined on the surface by the transition of the adjacent slope and the
transition of vegetation from sword fern and Sala to slough sedge and
salmonberry. Wetland Determination field data forms are included in the
Appendix for reference.
The wetland unit being rated is formed from surface and groundwater saturating
the wetland area at a frequency and duration sufficient to support the
development of hydric soils and the growth of hydrophytic vegetation. The
wetland unit was rated using the Depressional forms for Water Quality and
Hydrologic functions and the Habitat form used for all Hydrogeomorphic
classifications based on the Washington State Department of Ecology Wetland
Rating System (2014 Update, Version 2.0). The wetland was rated a Category III
wetland based on its score for Functions with a habitat score of 7 and a total
score of 19 (see Appendix for rating forms and figures).
Function i
Improving Hydrologic Habitat
Water Quality
Site potential H L H M L H L
Landscape M L H M L M L
Potential
Value H L H M H L Total
Score Based on 7 5 7 19
Ratings
Fable 1:Summary of the wetland's scores based on functions.
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Project: 2023-WR-007 December 2023 Rrctos Enviravnentcd LLG
Table 8.52.110(D):Width of Buffers Required to Protect Category ill Wetlands. Wetlands Scoring
Between 16 and 19 Points on the Wetlands Rating System.
Nti'etland Characteristics Buffer Widths by Impacts of Proposed Land
L'se
Moderate level of fiuiction for habitat(score for Low-'5 ft
habitat 6-_points) Tloderate— 110
High—150 ft
Score for habitat 3-5 points Low-40 ft
Moderate—60 ft
High—80 ft
Figure 2:Screen capture of the Mason County Resource Ordinance Table 8.52.110(D)showing wetland buffers for category 111
wetlands.
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Project: 2023-WR-007 December 2023 Arc-to-, Environmentol LLG
Summary
This report details the wetland delineation and rating of a large depressional
wetland formed from surface and ground water inundating the wetland area at a
frequency and duration sufficient to support the development of hydric soils and
the growth of hydrophytic vegetation. The wetland meets Category 111 criteria
based on its score for wetland Functions. The buffer for this wetland is 110ft with
a 125ft Structure Setback for moderate intensity land uses based on the Mason
County Resource Ordinance (Table 8.52.110(D)). The portion of the wetland
within the subject lot was delineated and marked in the field with bright green
flagging. The wetland buffer should be measured horizontally from the flagged
edge in the field. A newly installed driveway filled in ±250ft2 of the wetland and
occupies ±2,OOOftz within the wetland's 110ft buffer.
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Project: 2023-WR-007 December 2023 Arc-to-, Environmental LLG
References
Environmental Laboratory. (1987). "Corps of Engineers Wetlands Delineation Manual,"Technical Report
Y-87-1, U.S.Army Engineer Waterways Experiment Station,Vicksburg, Miss.
Guard,J. (1995). Wetland Plants of Oregon &Washington. Lone Pine Publishing. 240 pp. Edmonton,
Alberta, Canada.
Hruby,T. (2014). Washington State Wetland Rating System for Western Washington: 2014 Update
(Version 2.0). (Publication#23-06-009). Olympia,WA:Washington Department of Ecology.
Munsell Color (Firm). (2009). Munsell soil color charts:with genuine Munsell color chips. Grand Rapids,
MI
Pojar,J. and A. MacKinnon. 1994. Plants of the Pacific Northwest Coast (Revised Edition 2014). Lone Pine
Publishing. 528 pp.Vancouver, British Columbia, Canada.
United States Department of Agriculture, Natural Resources Conservation Service. 2010. Field Indicators
of Hydric Soils in the United States,Version 7.0. L.M.Vasilas, G.W. Hurt, and C.V. Noble(eds.).
USDA, NRCS, in cooperation with the National Technical Committee for Hydric Soils.
U.S. Army Corps of Engineers 2020. National Wetland Plant List, version 3.4, http://wetland-
plants.usace.army.mil/U.S.Army Corps of Engineers, Engineer Research and Development
Center Cold Regions Research and Engineering Laboratory, Hanover, NH
U.S.Army Corps of Engineers. 2010. Regional Supplement to the Corps of Engineers Wetland
Delineation Manual: Western Mountains,Valleys, and Coast Region (Version 2.0), ed.J. S.
Wakeley, R. W. Lichvar, and C.V. Noble. ERDC/EL TR-10-3. Vicksburg, MS: U.S. Army Engineer
Research and Development Center.
Washington Department of Fish and Wildlife. 2008. Priority Habitat and Species List. Olympia,
Washington.292pp.
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Appendix: Data Forms, Rating Figures, & Site Photos
Wetland name or number
RATING SUMMARY —Western Washington
Name of wetland(or ID II): _ Date of site visit:
Rated by Trained by Ecology?_Yes No Date of training
HGM Class used for rating Wetland has multiple HGM classes?—Y_N
NOTE:Form is not complete without the required figures(figures can be combined).
Source of base aerial photo/map
OVERALL WETLAND CATEGORY (based on functions or special characteristics_)
1. Category of wetland based on FUNCTIONS
Category I-Total score=23-27 ---
Category II-Total score =20-22 function based 1
on three
Category III-Total score =16-19 ratings i
Category IV-Total score=9-15 (order of ratings
_ is not important)
FUNCTION Improving Hydrologic Habitat
Water 9=H,I H
8=H,H,M
QYality 7=H,H,L
Orrie the appropriate ratings 7=H,M,M
Site Potential H L H' M L H� L 6=H,M,L
Landscape Potential H M L H L H M L 6=M,M,M
Value H fv) L H M H M L TOTAL 5=H,L,L
--- -- --- --- 5=M,M,L
Score Based on 4=M,L,L
Ratings 3=L,L,L
2. Category based on SPECIAL CHARACTERISTICS of wetland
---------------
CHARACTERISTIC CATEGORY
Estuarine — I If
Wetland of High Conservation Value 1
Bog 1
Mature Forest 1
Old Growth Forest I
Coastal Lagoon 1 11
Interdunal 1 11 111 IY
None of the above
Wetland Rating System for Western WA:2014 Update I
Rating Form-Version 2,July 2023
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Project: 2023-WR-007 December 2023 Arctos Environrnentcdl LLG
Wetland name or number
Maps and figures required to answer questions correctly for Western Washington
_DeDressional Wetlands _
Map of _ To answer questions: Figure R
Cowardin plant classes _ D 1.3,H 1.1,H 1.4
Hydroperiods D 1.4,H 1.2
Location of outlet(can be added to mop o hydroperfods) D 1.1,D 4.1
Boundary of area within 150 ft of the wetland Icon be added to another figure) D 2.2,D 5.2
Map of the contributing basin D 4.3,D 5.3
1 km Polygon:Area that extends 1 km from entire wetland edge-including H 2.1,H 2.2,H 2.3
polygons for accessible habitat and total habitat
Screen capture of map of 303(d)listed waters in basin(from Ecology website) D 3.1,D 3.2
Screen capture of list of TMDLs for WRIA in which unit is found(from web D 3.3
Riverine Wetlands
map of To answer questions: Fivre e
Cowardin plant classes H 1-1,H 1.4
Hydroperiods ----- - ---- H 1.2 -- ----
Ponded depressions R 1.1
Boundary of area within 150 ft of the wetland(con be added to anotherh'ure) R 2.4
Plant cover of trees,shrubs,and herbaceous plants R 1.2,R 4.2
Width of unit vs.width of stream(con be added to mtother ure) R 4.1
Map of the contributing basin R 2.2,R 2.3,R 5.2
1 km Polygon:Area that extends i km from entire wetland edge-including H 2-1,H 2.2,H 2.3
polygons for accessible habitat and total habitat
Screen capture of map of 303(d)listed waters in basin(from Ecologywebsite) R 3.1
Screen capture of list of TMDLs for WRIA in which unit is found(from web) R 3.2,R 3.3
Lake Fringe Wetlands
Of: _ To answer quesdoem Flpm 0
Cowardin plant classes _ __ _ L 1.1,L 4-1,_H 1.1,H_1.4
Plant cover of trees,shrubs,and herbaceous plants _ L 1.2 _
Boundary of area within 150 ft of the wetland(can be added to another ure) L 2.2
1 km Polygon:Area that extends 1 km from entire wetland edge including H 2.1,H 2.2,H 2.3
polygons for accessible habitat and total habitat
Screen capture of mae of 303(d)listed waters in basin(from Ecology website) L 3.1,L 3.2
Screen capture of list of TMDLs for WRIA in which.unit is found(from web) L 3.3
Slope Wetlands
M of To answer questions: F re f
Cowardin plant classes H 1.1,H 1.4
Hydroperiods H 1.2
Plant cover of dense trees,shrubs,and herbaceous plants S 1.3
Plant cover of dense,rigid trees,shrubs,and herbaceous plants S 4.1
(con be odde_d to figure above)
Boundary of 150 ft buffer(can be added to another figure) S 2.1,S 5.1
1 km Polygon:Area that extends 1 km from entire wetland edge-including H 2.1,H 2.2,H 2.3
polygons for accessible habitat and total habitat
Screen capture of map of 303(d)listed waters in basin(from Ecology website) S 3.1,S 3.2 -
Screen capture of list of TMDLs for WRIA in which unit is found(from web)
Wetland Rating System for Western WA:2014 Update 2
Rating Form-Version 2,July 2023
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Project: 2023-WR-007 December 2023 Arctos Environmentol LLG
Wetland name or number
HGM Classification of Wetlands in Western Washington
For questions 1-7,the criteria described must apply to the entire unit being rated.
If the hydrologic criteria listed in each question do not apply to the entire unit being rated,you probably
have a unit with multiple HGM classes.In this case,identify which hydrologic criteria in questions 1-7 apply,
and go to Question 8.
1. Are the water levels in the entire unit usually controlled by tides except during floods?
NO—go to 2 YES—the wetland class is Tidal Fringe—go to 1.1
1.1 Is the salinity of the water during periods of annual low flow below 0.5 ppt(parts per thousand)?
NO—Saltwater Tidal Fringe(Estuarine) YES—Freshwater Tidal Fringe
if your wetland can be classified as a Freshwater Tidal Fringe use the forms for Riverine wetlands.If it is
Saltwater Tidal Fringe,it is an Estuarine wetland and is not scored.This method cannot be used to score
functions for estuarine wetlands.
2. The entire wetland unit is flat,and precipitation is the only source(>90%)of water to it.Groundwater and
surface water runoff are NOT sources of water to the unit.
NO—go to 3 YES—The wetland class is Flats
If your wetland can be classified as a Flats wetland,use the form for Depressional wetlands.
3. Does the entire wetland unit meet all of the following criteria?
_The vegetated part of the wetland is on the shores of a body of permanent open water(without any
plants on the surface at any time of the year)at least 20 ac(8 ha)in size,
_At least 309'o of the open water area is deeper than 6.6 ft(2 m).
NO—go to 4 YES—The wetland class is lake Fringe(Lacustrine Fringe)
4. Does the entire wetland unit meet all of the following criteria?
_The wetland is on a slope(slope can be very gradual),
_The water flows through the wetland in one direction(unidirectional)and usually comes from seeps.
It may flow subsurface,as sheet flow,or in a Swale without distinct banks,
_The water leaves the wetland without being impounded.
NO—go to S, YES—The wetland class is Slope
NOTE:Surface water does not pond in these type of wetlands except occasionally in very small and
shallow depressions or behind hummocks(depressions are usually<3 ft diameter and less than 1 It deep).
Wetland Rating System for Western WA:2014 Update 3
Rating form-VemGn 2,July 2023
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Project:2023-WR-007 December 2023 Arctos Environmental LLG
Wetland name or number
5. Does the entire wetland unit meet all of the following criteria?
_The unit is in a valley,or stream channel,where it gets inundated by overbank flooding from that
stream or river,
__The overbank flooding occurs at least once every 2 years.
NO—go to 6 YES—The wetland class is Riverine
NOTE:The Riverine unit can contain depressions that are filled with water when the river is not flooding
6. Is the entire wetland unit in a topographic depression in which water ponds,or is saturated to the surface,at
some time during the year?This means that any outlet,if present,is higher than the interior of the wetland.
NO—go to 7 YES—The wetland class is Depressional
7. Is the entire wetland unit located in a very flat area with no obvious depression and no overbank flooding?
The unit does not pond surface water more than a few inches.The unit seems to be maintained by high
groundwater in the area.The wetland may be ditched but has no obvious natural outlet.
NO—go to 8 YES—The wetland class is Depressional
8. Your wetland unit seems to be difficult to classify and probably contains several different HGM classes.For
example,seeps at the base of a slope may grade into a riverine floodplain,or a small stream within a
Depressional wetland has a zone of flooding along its sides.GO BACK AND IDENTIFY WHICH OF THE
HYDROLOGIC REGIMES DESCRIBED IN QUESTIONS 1-7 APPLY TO DIFFERENT AREAS IN THE UNIT(make a
rough sketch to help you decide).Use the following table to identify the appropriate class to use for the
rating system if you have several HGM classes present within the wetland unit being scored.
NOTE:Use this table only if the class that is recommended in the second column represents 10%or more
of the total area of the wetland unit being rated.If the area of the HGM class listed in column 2 is less than
10%of the unit;classify the wetland using the class that represents more than 90%of the total area.
HGM classes within the wetland unit HGM class to
_ being rated use in rating
Slope+Riverine Riverine
Slope+Depressional Depressional
Slope+Lake Fringe Lake Fringe
Depressional+Riverine along stream Depressional
within boundary of depression
Depressional+Lake Fringe Depressional
Riverine+Lake Fringe Riverine
Salt Water Tidal Fringe and any other Treat as
class of freshwater wetland ESTUARINE
If you are still unable to determine which of the above criteria apply to your wetland,or if you have more than
2 HGM classes within a wetland boundary,classify the wetland as Depressional for the rating.
Wetland Rating System for Western Wk 2014 Update 4
Rating Form-Version 2,July 2023
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Project: 2023-WR-007 December 2023 Arctos Environmental LLG
Wetland name or number
DEPRESSIONAL AND FLATS WETLANDS
Water Quality Functions - Indicators that the site functions to improve water quality
D 1.0.Does the site have the potential to improve water quality?
D 1.1.Characteristics of surface water outflows from the wetland:
Wetland is a depression or flat depression(QUESTION 7 on key)with no surface water leaving it(no outlet).
points=3
Wettand has an intermittently flowing stream or ditch, OR highly constricted permanently flowing outlet.
points=2
Wetland has an unconstricted,or slightly constricted,surface outlet that is permanently flowing points=1
Wetland is a flat depression(QUESTION 7 on key),whose outlet is a permanently flowing ditch. points=1
D 1.2.The soil 2 in below the surface for duff lavers is true clay or true organic fuse NRCS definitions).Yes=4 No=0
D 1.3.Characteristics and distribution of persistent plants(Emergent,Scrub-shrub,and/or Forested Cowardm classes):
Wetland has persistent,ungrazed,plants>95%of area points=5 ._
Wetland has persistent,ungrazed,plants>K of area points=3
Wetland has persistent,ungrazed plants>'/tc of area points=1
Wetland has persistent,ungrazed plants<'/.Q of area points=0
D 1A Characteristics of seasonal Ponding or inundation:
This is the area that is ponded for of least 2 months.See description in manual.
Area seasonally ponded is>Y.total area of wetland points=4 -
Area seasonally ponded is>Y total area of wetland points=2
Area seasonally ponded is<S total area of wetland points=0
Total for D 1 Add the points in the boxes above
Rating of Site Potential If score is:-12-16=H '6-11=M _0-5=L Record the rating on the firs[page
D 2.0.Does the landscape have the potential to support the water quality function of the site?
D 2.1.Does the wetland unit receive stormwater discharges? Yes=1 No=0
D 2.2.Is>10%of the area within 150 it of the wetland in land uses that generate pollutants? Yes=1 No=O
D 2.3.Are there septic systems within 250 ft of the wetland? Yes=1 No=O t
D 2.4.Are there other sources of pollutants coming Into the wetland that are not listed in questions D 2.1-D 2.3?
Source Yes=1 No=0
Total for D 2 Add the points in the boxes above
Rating of Landscape Potential If score is:_3 or 4=H _1 or 2=M _0=L Record the rating on the first page
D 3.0.Is the water quality improvement provided by the site valuable to society?
D 3.1.Does the wetland discharge directly(i.e.,within 1 mi)to a stream,river,take,or marine water that is on the i
303(d)list? Yes=i No=0
D 3.2.Is the wetland in a basin or sub-basin where an aquatic resource is on the 303(d)list? Yes=1 No=0
D 3.3.Has the site been identified in a watershed or local plan as important for maintaining water quality(onswer YES
if there is o TMDL for the basin in which the unit is found)? Yes=2 No=0
Total for D 3 Add the points in the boxes above
Rating of Value If score is:_2-4=H 4-1=M _0=L .Record the rating on the first page
Wetland Rating System for Western WA:2014 Update S
Rating Form-Effective January 1,2015
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Project:2023-WR-007 December 2023 Arc+os Enveonmen+al LLG
Wetland name or number
DEPRESSIONAL AND FLATS WETLANDS
Hydrologic Functions-Indicators that the site functions to reduce flooding and stream degradation
D 4.0.Does the site have the potential to reduce flooding and erosion?
D 4.1,Characteristics of surface water outflows from the wetland:
Wetland is a depression or flat depression with no surface water leaving it(no outlet) points=4
Wetland has an intermittently flowing stream or ditch, OR highly constricted permanently flowing outlet points=2
Wetland is a flat depression(QUESTION 7 on key),whose outlet is a permanently Flowing ditch points=1
Wetland has an unconstricted,or slightly constricted,surface outlet that is permanently flowing points=0
D 4.2.Death of storage during wet Penods:Estimate the height of ponding above the bottom of the outlet.For wetlands
with no outlet,measure from the surface of permanent water or if dry,the deepest port.
Marks of ponding are 3 It or more above the surface or bottom of outlet points=7
Marks of ponding between 2 It to<3 It from surface or bottom of outlet points=5
Marks are at least 0.5 ft to<2 It from surface or bottom of outlet points=3
The wetland is a"headwater"wetland points=3
Wetland is flat but has small depressions on the surface that trap water points=1
Marks of ponding less than 0.5 It(6 in) points=0
D 4.3.Contribution of the wetland to storage in the watershed:Estimate the ratio of the area of upstream basin
contributing surface water to the wetland to the area of the wetlond unit itself.
The area of the basin is less than 10 times the area of the unit points=5
The area of the basin is 10 to 100 times the area of the unit points=3
The area of the basin is more than 100 times the area of the unit points=0
Entire wetland is in the Flats_class points=5
Total for D 4 Add the points in the boxes above
Rating of site potential if score!s 12-16=H 6-11=M 0.5=L Record the rating on the/first pogp
D 5.0.Does the landscape have the potential to support hydrologic functions of the site?
D S.I.Does the wetland receive stormwater discharges? Yes-1 No=0
D 5.2.Is -10%of the area within 150 h of the wetland inland uses that generate excess runoff? Yes-1 No=0
D 5.3.is more than 25%of the contributing basin of the wetland covered with intensive human land uses(residential at
>1 residence/ac,urban,commercial,agriculture,etc.)? Yes=1 No=0
Total for D 5 Add the points in the boxes above
Rating of landscape Potential If score is:_3=H ,_1 or 2=M _0=L Record the rating on the first page
D 6.0.Are the hydrologic functions provided by the site valuable to society?
D 6.1.The unitis in a landscape that has flooding Problems.Choose the description that best matches conditions around
the wetland unit being rated. Do not odd points.Choose the highest score if more than one condition is met.
The wetland captures surface water that would otherwise flow down-gradient into areas where flooding has
damaged human or natural resources(e.g-,houses or salmon redds):
• Flooding occurs in a sub-basin that is immediately down gradientof unit. points=2
• Surface flooding problems are in a sub-basin farther down-gradient. points=1
Flooding from groundwater is an issue in the sub-basin. points=1
The existing or potential outflow from the wetland is so constrained by human or natural conditions that the
water stored by the wetland cannot reach areas that flood.Explain why points=0
There are no problems with flooding downstream of the wetland. points=0
D 6.2.Has the sde been identified as important for flood storage or flood conveyance in a regional flood control plan?
Yes=2 NO=O -
Total for D 6 Add the points in the boxes above
Rating of Value If score is:_2-4=H _1=M LO=L Record the rating on the first page
Wetland Rating System for Western WA:2014 Update 6
Rating Form-Effective January 1,2015
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Project:2023-WR-007 December 2023 «r-cto5 Envirorw vvU LLG
Wetland name or number
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H 1.0.Does the site have the potential to provide habitat?
H 1.1.Structure of plant community:Indicators are Cowardin classes and strata within the forested class.Check the
Cowardin plant classes in the wetland.Up to 10 patches may be combined for each class to meet the threshold
of Z ac if the unit is at least 2.5 ac,or more than 10%of the unit if it is smaller than 2.5 ac.
_Aquatic bed 4 structures or more:points=4
_Emergent 3 structures:points=2
—Scrub-shrub(areas where shrubs have>30%cover) 2 structures:points=1
Forested(areas where trees have>30%cover) 1 structure:points=0
Of the unit has a Forested class,check if
The Forested class has 3 out of 5 strata(canopy,subcanopy,shrubs,herbaceous,moss/groundcover)that
each cover 20%within the Forested polygon
H 1.2.Hydroperiods
Check the types of water regimes(hydroperiods)present within the wetland.The water regime has to cover
more than 10%of the wetland if the unit is e 2.5 ac,or%ac if the unit is at least 2.5 ac to count(see text for
descriptions of hydroperiods).
Permanently flooded or inundated 4 or more types present:points=3
TSeasonally flooded or inundated 3 types present:points=2
--Occasionally flooded or inundated 2 types present:points=1
_Saturated only I type Present points=0
._Permanently flowing stream or river in,or adjacent to,the wetland
_Intermittently or seasonally flowing stream in,or adjacent to,the wetland
__Lake Fringe wettand 2 points
_Freshwater tidal wetland 2 points
H 1.3.Richness of plant species
Count the number of plant species in the wetland that cover at least 10 ft=.
Different patches of the same species can be combined to meet the size threshold and you do not have to
name the species.Do not include Eurasian miHoil,reed canarygrass,purple loosestrife,Canada thistle
If you counted:>19 species points=2
5-19 species points=1
<5 species points=0
H 1.4.Interspersion of habitats _
Decide from the diagrams below whether interspersion among Cowardin plants classes(described in H 1.1),or
the classes and unvegetated areas(can include open water or mudflats)is high,moderate,low,or none.If you
have four or more plant classes or three classes and open water,the rating is always high.
DO C*D (0�1
None=0 ac:,,ts Low=1 point Moderate=2 points
All three diagrams
in,—s row
a-e High=3 pants
Wetland Rating System for Western WA:2014 Update 13
Rating Form-Version 2,July 2023
14
Project:2023-WR-007 December 2023 Arctos F_nvironrtental LLG
Wetland name or number
H 1.5.Special habitat features:
Check the habitat features that are present in the wetland.The number of checks is the number of points.
Large,downed,woody debris within the wetland(>4 in.diameter and 6 ft long).
____Standing snags(dbh>4 in.)within the wetland
_Undercut banks are present for at least 6.6 It(2 m)and/or overhanging plants extend at least 3.3 ft(1 m)
over open water or a stream(or ditch)in,or contiguous with the wetland,for at least 33 ft(10 m)
___Stable steep banks of fine material that might be used by beaver or muskrat for denning(>30 degree
slope)OR signs of recent beaver activity are present(cut shrubs or trees that have not yet weathered
where wood is exposed)
_At least%ac of thin-stemmed persistent plants or woody branches are present in areas that are
permanently or seasonally inundated(structures for egg-laying by amphibians)
_Invasive plants cover less than 25%of the wetland area in every stratum of plants(see H I I above for the
list of strata and H 1.5 in the manual for the list of aggressive plant species)
Total for H 1 Add the points in the boxes above
Rating of she Potential If score is:_,IS-18=H ' 7-14=M _0-6=L Record the rating on the first page
H 2.0.Does the landscape have the potential to support the habitat functions of the site?
H 2.1.Accessible habitat(include only habitat polygons accessible from the wetland
Calculate:%relatively undisturbed habitat_+[(%moderate and low intensity land uses)(21__ %
Total accessible habitat is.
(33.3%)of 1 km Polygon points=3
20-33%of 1 km Polygon points=2
30-19%of 1 km Polygon points=1 -"
<10%of 1 km Polygon points=0
H 2.2.Total habitat in 1 km Polygon around the wetland.
Calculate:%relatively undisturbed habitat_+((%moderate and low intensity land uses)/21_
Total habitat>50%of Polygon points=3
Total habitat 10-50%and in 1 3 patches points=2
Total habitat 10-50%and>3 patches points=1
Total habitat<10%of 1 km Polygon points=0
H 2.3.Land use intensity in 1 km Polygon:
>50%of I km Polygon is high intensity land use points=(-2)
S.
50%of 1 km Polygon is high intensitypoints=0
Total for H: Add the points in the boxes above
Rating of Landscape Potential H score H _1-3=M _c 1=L Record the rating on the first page
H 3.0 Is the habitat provided by the site valuable to society?
H 3.1.Does the site provide habitat for species valued in laws,regulations,or policies?Choose only the highest score
that applies to the wetland being rated.
Site meets ANY of the following criteria: points=2
— It has 3 or more Priority Habitats within 100 m(see next page)
— It provides habitat for Threatened or Endangered species(any plant or animal on the state or federal lists)
— It is mapped as a location for an individual WDFW Priority Species
— It is a Wetland of High Conservation Value as determined by the Department of Natural Resources data
— It has been categorized as an important habitat site in a local or regional comprehensive plan,in a
Shoreline Master Plan,or in a watershed plan
Site has 1 or 2 Priority Habitats(listed on next page)within 100 in, points=1
_ Site does not meet Antoftbe criteria above points=0 _
Ratirl8 of Value If score is:_Z=H 11=M _0=L Record the rating an the first page
Wetland Rating System for Western WA:2014 Update 14
Rating Form-Version 2,July 2023
15
Project: 2023-WR-007 December 2023 Arc-tog Environmental LLG
Wetland name or number_^
WDFW Priority Habitats
See complete descriptions of Priority Habitats listed by WDFW,and the counties in which they can be
found,in:Washington Department of Fish and Wildlife.2008(current year,as revised).Priority Habitat and
Species List."'This list was updated for consistency with guidance from WDFW.
This question is independent of the land use between the wetland unit and the Priority Habitat.All vegetated
wetlands are by definition a Priority Habitat but are not included in this list because they are addressed by this
rating system.
Count haw many of the following Priority Habitats are within 330 ft(100 m)of the wetland unit:
—Aspen Stands:Pure or mixed stands of aspen greater than 1 ac(0.4 ha).
— Biodiversity Areas and Corridors:Areas of habitat that are relatively important to various species of
native fish and wildlife.This habitat automatically counts if mapped on the PHS online map within 100m
of the wetland.if not mapped,a determination can be made in the field.
—Caves:A naturally occurring cavity,recess,void,or system of interconnected passages under the earth
in soils,rock,ice,or other geological formations and is large enough to contain a human.
—Cliffs:Greater than 25 ft(7.6 m)high and occurring below 5000 ft elevation.
—Fresh Deepwater:Lands permanently flooded with freshwater,including environments where surface
water is permanent and often deep,so that water,rather than air,is the principal medium within which
the dominant organisms live.Substrate does not support emergent vegetation.Do not select if Instream
habitat is also present,or if the entire Deepwater feature is included in the wetland unit being rated
(such as a pond with a vegetated fringe).
—Herbaceous Balds:Variable size patches of grass and fortis on shallow soils over bedrock.
—Instream:The combination of physical,biological,and chemical processes and conditions that interact
to provide functional life history requirements for instream fish and wildlife resources.Do not select if
Fresh Deepwater habitat is also present.
—Nearshore:Relatively undisturbed nearshore habitats.These include Coastal Nearshore,Open Coast
Nearshore,and Puget Sound Nearshore.
—Old-growth/Mature forests:Old-growth west of Cascade crest—Stands of at least 2 tree species,
forming a multi-layered canopy with occasional small openings;with at least 8 trees/ac(20 trees/ha)>
32 in.(81 cm)diameter at breast height(dbh)or>200 years of age.Mature forests—Stands with
average diameters exceeding 21 in.(53 cm)dbh;crown cover may be less than 100%;decay,
decadence,numbers of snags,and quantity of large downed material is generally less than that found in
old-growth;80-200 years old west of the Cascade crest.
http://wdfw.wa.gov/publications/00165/wdfw00165.pdf
Wetland Rating System for Western WA:2014 update 15
Rating Form—version 2.July 2023
16
Project: 2023-WR-007 December 2023 Arc+os Environmetn cd LLG
Wetland name or number
—Oregon White Oak:Woodland stands of pure oak or oak/conifer associations where canopy coverage of
the oak component is important.For single oaks or oak stands<0.4 ha in urban areas,WDFW's
Management Rgcommendations for Oregon White 0ak734 provides more detail for determining if they
are Priority Habitats
—Riparian:The area adjacent to freshwater aquatic systems with flowing or standing water that contains
elements of both aquatic and terrestrial ecosystems which mutually influence each other.
—Snags and Logs:Trees are considered snags if they are dead or dying and exhibit sufficient decay
characteristics to enable cavity excavation/use by wildlife.Priority snags have a diameter at breast
height of>20 in.(51 cm)in western Washington and are>6.5 ft(2 m)in height.Priority logs are>12
in.(30 cm)in diameter at the largest end,and>20 ft(6 m)long.
—Talus:Homogenous areas of rock rubble ranging in average size 0.5-6.5 ft(0.15-2.0 m),composed of
basalt,andesite,and/or sedimentary rock,including riprap slides and mine tailings.May be associated
with cliffs.
—Westside Prairies:Herbaceous,non-forested plant communities that can either take the form of a dry
prairie or a wet prairie.
https://wdfw.wa.gov/publications/00030/wdfw00030.pdf
Wetland Rating System for Western WA:2014 Update 16
Rating Form-version 2,July 2023
17
Project: 2023-WR-007 December 2023 Arc+os Environmental LLG
Wetland name or number
CATEGORIZATION BASED ON SPECIAL CHARACTERISTICS
M 0
SC I.C.Estuarine wetlands
Does the wetland meet the following criteria for Estuarine wetlands?
—The dominant water regime is tidal,
--Vegetated,and
—With a salinity greater than 0.5 ppt Yes-Go to SC 1.1 No=Not an estuarine wetland
SC 1.1.Is the wetland within a National Wildlife Refuge,National Park,National Estuary Reserve,Natural Area
Preserve,State Park or Educational,Environmental,or Scientific Reserve designated under WAC 332-30-151?
Yes=Category 1 No-Go to SC 12 Cat.1
SC 1.2.Is the wetland unit at least 1 at in size and meets at least two of the following three conditions?
—The wetland is relatively undisturbed(has no diking,ditching,filling,cultivation,grazing),and has less
than 10%cover of non-native plant species.If non-native species are Sporting,see chapter 4.8 in the Cat.I
manual.
—At least%of the landward edge of the wetland has a 100 It buffer of shrub,forest,or un-grazed or un-
mowed grassland. Cat.11
—The wetland has at least two of the following features:tidal channels,depressions with open water,or
contiguous freshwater wetlands. Yes=Category 1 No=Category It
SC 2.0.Wetlands of High Conservation Value(WHICV)
SC 2.1.Does the wetland overlap with any known or historical rare plant or rare&high-quality ecosystem polygons
on the W N HP Dea tg[?rag Yes=Category 1 No-Go to SC 2.2 Cat.I
SC 2.2.Does the wetland have a rare plant species,rare ecosystem(e.g.,plant community),or high quality common
ecosystem that may quality the site as a W HCV?Contact W NHP for resources to help determine the
presence of these elements.
Yes-Submit data to WA Natural Merrtage Protram.for aetermination,13A Go to SC 2.3 No=Not a WHCV_,
SC 2.3.Did WNHP review the site within 30 days and determine that it has a rare plant or ecosystem tha`f`meeh their
criteria?
Yes=Category 1 No=Not a WHCV
SC 3.0.Bogs
Does the wetland(or any part of the unit)meet both the criteria for soils and vegetation in bogs?Use the key
below.If you answer YES,you Will still need to rate the wetland based on its functions.
SC 3.1.Does an area within the wetland unit have organic soil horizons,either peats or mucks,that compose 16 im
or more of the first 32 in.of the soil profile? Yes-Go to SC 3.3 No-Go to SC 3.2,
SC 3.2.Does an area within the wetland unit have organic soils,either peals or mucks,that are less than 16 in.deep
over bedrock,or an impermeable hardpan such as clay or volcanic ash,or that are floating on top of a lake or
pond? Yes-Go to SC 3.3 No=Not a bog
SC 3.3.Does an area with peats or mucks have more than 70%cover of mosses at ground level,AND at least a 30%
cover of plant species listed in Table 4? Yes-Category I bog No-Go to SC 3.4
NOTE:If you are uncertain about the extent of mosses in the understory,you may substitute that criterion by
measuring the pH of the water that seeps into a hole dug at least 16 in.deep.If the pH is less than 5.0 and
the plant species in Table 4 are present,the wetland is a bog. Cat.I
SC 3.4_Is an area with peals or mucks forested(>30%cover)with Sitka spruce,subalpine fir,western red cedar,
western hemlock,lodgepole pine,quaking aspen,Engelmann spruce,or western white pine,AND any of the
species(or combination of species)listed in Table 4 provide more than 30%of the cover under the canopy)
Yes-Category I bog No=Not a bog
I's https://www.dnr.wa.gov/NHPdata
"https://www.dnr.wa.gov/Publications/amp_nh sightingtorm.pch'
Wetland Rating System for Western WA:2014 Update 17
Rating Form-Version 2,July 2023
18
Project: 2023-WR-007 December 2023 Rrctos Environmental LLG
Wetland name or number
SC 4.0.Forested Wetlands
Does the wetland have at least 1 contiguous acre of forest that meets one of these criteria for the WA
Department of Fish and Wildlife's forests as Priority Habitats?if you answer YES,you will still need to rote
the wetland based on its functions.
—Old-growth forests(west of Cascade crest):Stands of at least two tree species,forming a multi-layered
canopy with occasional small openings;with at least 8 trees/ac(20 trees/ha)that are at least 200 years of
age OR have a diameter at breast height(dbh)of 32 in.(81 cm)or more.
—Mature forests(west of the Cascade Crest):Stands where the largest trees are 80-200 years old OR the
species that make up the canopy have an average diameter(dbh)exceeding 21 in.153 rm).
Yes=Category I No=Not a forested wetland for this section Cat.I
SC 5.0.Wetlands in Coastal lagoons
Does the wetland meet all of the following criteria of a wetland in a coastal lagoon?
—The wetland lies in a depression adjacent to marine waters that is wholly or partially separated from
marine waters by sandbanks,gravel banks,shingle,or,less frequently,rocks
--The lagoon in which the wetland is located contains ponded water that is saline or brackish Ill 0.5 poll
during most of the year in at least a portion of the lagoon(needs to be measured near the bottom)
—The lagoon retains some of its surface water at low tide during spring tides
Yes-Go to SC 5.1 No=Not a wetland in a coastal lagoon Cat 1
SC 5.1.Does the wetland meet all ofthetatiowing three conditions?
—The wetland is relatively undisturbed(has no diking,ditching,filling,cultivation,grazing),and has less
than 20%cover of aggressive,opportunistic plant species(see list of species in H 1.5 in the manual).
—At least%of the landward edge of the wetland has a 100 It buffer of shrub,forest,or ungrazed or un- Cat-11
mowed grassland.
—The wetland is larger than Vic ac 1435o ftl
Yes=Category 1 No=Category II
SC6.0.Interdunal Wetlands
Is the wetland west of the 1889 line(also called the Western Boundary of Upland Ownership or WBUO)?If
you answer YES,you will still need to rote the wetland based on its habitat functions.
to practical terms that means the following geographic areas:
— Long Beach Peninsular Lands west of SR 103
— Grayland-Westport:lands west of SR 105 Cat I
— Ocean Shores-Copalis:Lands west of SR 115 and SR 109 and Ocean Shores Blvd SW,including lands west
of E.Oceans Shores Blvd SW.
Yes-Go to SC 6.1 No=Not an interdunal wetland for rating
Cat.11
SC 6.1.Is the wetland 1 ac or larger and scores an 8 or 9 for the habitat functions on the form frates H,H,H or H,H,M
for the three aspects of function)? Yes=Category I No-Go to SC 6.2
SC 6.2.Is the wetland 1 ac or larger,or is it in a mosaic of wetlands that is 1 ac or larger? Cat.III
Yes=Category II No-Go to SC 6.3
SC 6.3.Is the unit between 0.1 and 1 ac,or is it in a mosaic of wetlands that is between 0.1 and 1 ac?
Yes=Category III No=Category IV Cat.IV
Category of wetland based on Special Characteristics
If you answered No for all types,enter"Not Applicable"on Summary Form
Wetland Rating System for Western WA:2014 Update 18
Rating Form-Version 2,July 2023
19
Project: 2023-WR-007 December 2023 Arctos Envrr-onrnen+al LLG
I
WETLAND DETERMINATION DATA FORM-Western Mountains,Valleys,and Coast Region
ProlecVSrte -Ciry;CourcY Sampling Date
ApplrcanUOwner State Sampling Poem
Inws"rx(s) t Section.Township Range
Landfonn(hdlSlope lerraCe,etc) Local relief ICAretave Comex none) Slope t%)
Sut,regorn(LRR) Lat ` _..' - Long Datum ;
Son Map Unit Name _ _NW classrli ation-
Are climatic I hydrologic conditions on the site typical br Ins time of year?Yes_ No_Of no explain in Remarks.)
Are Vegetal—_Sal_or Hydrology—sg"-,Aty disturbed' Are'Normal Grcumstances'pesem? Yes_No_
Are Vegetation_Sal_or Hydrology_natwalty problematic? (II needed.explain any answers in Remarks)
SUMMARY OF FINDINGS-Attach site map showing sampling point locations,transects,important features,etc.
Hydrophybc Vegetation Present? Yes NO -.. .._ .--.
Hydric Sod Present? Yes No Is the Sampled Area
Weiland Hydrology Present? Yes No *(thin a Wetland? Yes No
Remarks.
VEGETATION-Use scientific names of plants.
--------- -Absolute Dominant Indicator:Dominance Test worktlNNk
Tree Stratum (Plot sue 1 %Cover Soeaes? t t s
I Number of Dorttxnanl Species
I !That Are OBL FACW.of FAG (A)
2
Total Nninber of Command
3 i Species Across All Strata (6)
{
l Percent Of Dominant Species
=Total Cover I That Are ORL.FACW.or FAG. (A/3)
SadinNSnrub Stratum (Plot we 1
I
Prevalence Index wort sheet
Total%Cover of Multidy by.
2
3 OBL Species x I=
FACW species x 2=
{.
5 FAC speces x 3=
FACU species x{=
_=Total Cover
Herb Stahl" (Plot sue ) UPL species x 5=
I Column Totals (A) (BI
2 Prevalence Index•&A-
3. MydroPhytic Vegetanion 6plcalors:
{ t-Rapid Test for Hydrophytic Vegetation
5 12-Dominance Test rs>50%
6 _3-Prevalerx,e Index is s3.0'
T _♦-Morphological Adaptation (Provide suppMerg
6, data m Remarks or on a separate sheet)
g 5 Wetland Non Vasailar,Plants
10 Problematic Hydrophyhc Vegetation-(Explain)
I I 'Indicators of hydnc soil and wetland hydrology must
=Total Cover be present unless disturbed orproblematic
Woody Vine Stratum (Plot we 1
I. - Nydrophytk
2 vogetstion
=Total Cover Press,"? Yes_
%Bare Ground in Herb Stratum - ---
Remarks
L _
US Army Corps of Engineers Western Mountains Vaxeys and Coast-Version 2.0
20
Project: 2023-WR-007 December 2023 Rrctos Environmental LLG
SOIL Sampling Point_
ProfiN Description:IDescriDe to the Wpfh rrseded to document the uld—tur-conrinm the absence of iMkators.)
Depth Matrix Redox Fear 5
inches) CO-191- sh %_ Color(mast) % ivoe Lgc_ Texture Remarks _
Type C=_Concientrabon.tY-Depletion.RM-Reduced Matrix.CS=Covered or Coated Sand Grams Locabon PL=Pore Lrrtlrg M=Maine
Hydrk Soil indicators:lApplicabk to all LRRs.unless otherwise noted.) indicators for ProApmetic Hy�onc i4S i4S
_Hrstosol(All _Sandy Redox(SS) _2 cm Muck(AID)
_Hisirc F_prpedon(A2) _Stripped Matnx(S5) _ Red Parent Material(TF21
_Black Hishc(A3) _Loamy Mucky Mineral(Fl)(except YLRA 1) _Very Shallow Dark Surface(TF12)
_Hydrogen Sulfide(A4) _Loamy Gleyed Matrix(F2) _Other(Explain ri Remarks)
_Depleted Below Dark Surface(All) _Depleted Matrix(F 3)
_Thick Dark Surface(Al2) Red-Dark Surface(Fill 'bMrdtors of hydrophytic vegetatuwt and
_Sandy Mucky Mineral IS1) Depleted Dark Surface(F7) wellarM hydro"must be present.
_Sandy Gieyed Matrix(S4) _Redox Depressions(Fill unless disturbed w problematic
Wstrfettw Layer(M present):
Type
Depth Pnches l lydric SON Present? Yes_ No
Remarks
HYDROLOGY
— n—
Wet4nd—Hyd—rology Indicators
"rilndicalors(minimum of one reouxed check au thal apply) _ Semndanv indicators(2 or more re0utredl
Surface Water(A 1) _Water-Staehed leaves lBg)(except _Water Stained Leaves(89)(ILLRA 1.2,
High Water Table(A2) MLRA 1.Z 4A,and 48) 4AL and 48)
_Saturation 1A31 _Sall Crust(a 11) _Drainage Patterns(BID)
_Water Marks(Bt) _Aquatic Invertebrates(8131 _Dry Season Water Table(C2)
_ Sediment Deposits(82) _Hydrogen Surfide Odor(CI) _Saturation Visble on Aerial Imagery(C9)
_Drift Deposits(83) _Oxidized RtIvospheres along Lwtnq Roots(C3) _Geomorphic Position(D2)
_Algal Mat or Crust(Bit) Presence of Reduced fron(C4) _Shallow Aqudard ID3)
_ Iron Deposits(85) _Recent Iron Reductan in Teed Sods(C6) _FAC-Neutral Test(D5)
_ Surface Sal Cracks(B6) _Stunted or Stressed Plants(DI)(LRR A) _Rallied Aru Mounds(D6)(LRR A)
_ Inundalgn Visible on Aerial Imagery(B7) _Other(Explain in Remarks) _Frost Heave Hummocks mhocks(D7)
_Sparsely Vegetated Concave Surface(88)
FWd Observations-_ — - - ---
Surface Water PresehP Yes No_Depth(inches)
Water Table Present') Yes_No_Depth(inches(
Saturation Pmsentn Yes _No_Depth(.cyhest'. _ Weiland Hydrology Presents Yes_ No
_Includes capillary trnge) i_
Describe Recorded Data(stream gauge..j,'4 mg wes.aerial photos.previous ahspections).if available
1�
Remarks
US Army Corps of Engineers Western Mountains.Valleys and Coast-Version 2 D
21
Project:2023-WR-007 December 2023 Rrctos Environmental LLG
WETLAND DETERMINATION DATA FORM-Western Mountains,Valleys,and Coast Region
PrefectlSde . Ciry/County: sampling Date
AppliantI0.1*1 -. State Sampling Point
Investgalor(s) - Section.Township.Range.
LandlOnn(hdislope.tertace etc) Local relief(Concave corhpx,node). Slope I%) _
Subregion(LRR)_ tat fI_' Long._ Datum
Sal Map Urkt Name NW classification.
Are climatic I hydrologic Conditions on the site typical for this time of year?Yes_,No_(If no,explain in Remarks.)
Are Vegetation_.Sod^or Hydrology_sgnrfican.ty disturbed? Are'Normal Cinamstan ces'present? Yes_No
Are Vegetation—Soil—Of Hydrology;naluraily prnblem iliO (II needed explain any answers in Remarks)
SUMMARY
-MMAR-Y OF FINDINGS-Attach site map showing sampling point locations,transects,important features,etc.
Hydrophl ybc Vegetation Present? Yes No _— --------------------
Hydm Sal Present? Yes No Is the Sampled Area
Wetland Hydrology Present> Yes_ No within a Welland? Yea No
Remarks --
VEGETATION—Use scientific names of plants.
t---- ------ Absolute Dominant Indicator Dominance Test worksheets — --
Tree Stratum (Plot we ) % v0+ eS Status Number of Dominant Spares
t {That Are 08L,FACW,or FAC (AI
2.
3 Total .row of Dwtenant
Species Across All Strata (B)
Percent of Dominant Species
=Saolrcna(Shnrb Stra tPtof size Total Cover That Are OBL.FACW.or FAC. (AB)
tum 1
Prevalence Index worksiraet:
Total%cover Of: Multiply by:
2 -- v
3. 1 OBL species x t=
=_
FACW species _ x 2=
FAG species x 3=
5
FACU species z 4=
=Total(.OVer
Herb$um (Plot we. 1 UPL species x 5=
t (Column Totals (A) (B)
2 _
3 _.—Index=f3rA
=
HyOrophytic Vegetation Indicators:
4 _t-Rapid Test for Hydrophylic Vegetation
5. _2 Dominance Test is>50%
6. _3-Prevalence Index is s3 0'
7 _4 Morphological Adaptations(Provide supporting
6. data in Remarks or on a separate sheet)
g I_5-Welland Non-Vascular Plants
10. _Problematic Hydrophytic Vegetation(Explain)
11 'Indicators of hydnc sod and wetland hydrology must
Total Cover be present unless disturbed orproblematic
Woody Vine Stratum (Plot we
T I Hydrophytic
2. Vegetation
Total Coves I Preserd? Yw_ No_
%Bare GrOutd m Hem m Stratu IL
Remarks
US Army Corps of Engineers Western Mountains Valleys,and Coast--Version 2.0
22
Project:2023-WR-007 December 2023 Rrctos Environmetn+al LLG
SOIL Sampling Point
Profile Da dptlon:(Describe to the depth needed to r1murnartt the indicator or conflmr tl»absence of indicators.) --
Depth Matnz Redo.Features
onrhew Color(mptsit %_ Colorlmastl _ Tyne Loc, Texture Remarks
i_
'TypeC=Carwentratan.U=Oe corn.RM=Retluoed_Matrix CS�Co.rretl or Coated Sand Grans. 'Locaoon Pl=Pore L .M=lNatru.
Hydrk Soil Irldkamrs:(Applicable to all LRRt,unless otherwise noted.) Indicators for Problematic Hydrle Sob':
_Hkslosol(At) _Sandy Redox(S5) _2 cm Muck(A10)
_Fksbc Eppedon(A2) _Stripped Matrix IS6) _Red Parent Material(TF2)
_&aek Histrc(A3) _Loamy Mucky Mineral(F I)(except MLRA 1) _Very Shallm Dark Surface(TF12)
_Hydrogen Sulfide(A4) _Loamy Gleyed Mafnx(F2) _Oth—E.Pi—rn Remarks)
_Depleted Below Dark Surtace(All l _Depleted Matrix IF31
_Thick Dark Surface(A 12) _Redo.Dark Surface(F6) Indicators of hydrophytrc vegetation and
_Sandy Mucky Mineral(S1) _Depleted Dark Surface(F7) wetland hydrology must be present
_Sandy Gleyed Matz IS4) _Redox Depressions(F8) unless disturbed or problematic
Restrictive Layer(it present):
Type
Dept'(.toes) __--_.—_ HyM4c Sob Present? Yes_ No_
Remarks
HYDROLOGY
Wetland Hydrology Indicator:
Pryinary_I_nQIWQrS 1m.Mlllum of p(IC repUtred Gh2CR all Mat aOdyt _ Secondary Indicators(2 or more,rreau redf
_Surface Water IAi) _ttialen Stained Leaves(B9)(except _Water Stained leaves(89)(MLRA 1.2.
_High Water Table(A2) MLRA 1,2.M and 48) 4A.and 48)
_Saturation IA3) _Sat Crust(B 11) _Drainage Patterns(810)
_Water Marks 181) _ Aquatic Invenewates(813) _Dry Season Water Table(C2)
_Sediment Deposits(82) __-Hydrogen Sulide Odor(CI) _Saturation Visible on Aerial imagery(C9)
_Drift Deposits(83) _Oxdued Rhunsphems along Living Roots(C3)_Geornorpfec Position(D2)
_Algal Mat w Gust(B4) _Presence of Reduced Iron IC4) _Shallow Aqudwd(D3)
_Iron Deposits(B5) _Recent Iron Reduction in Tined Sods(C6) _FAC-Neutral Test(D5)
_Surface Sol Cracks(B6) _Stunted or Stressed Plants(DI)(LRR A) _Raised Am Mounds I.)(LRR A)
_Inundation Visible on Aerial Imagery(B7) _Other i,Explam m Remarks) _Frost Heave Hummocks(D71
_Spa—ly Vegetated Concave Surface(BBi
Field Observation: ---
Su fat-Water Presents Yes_No__Depth(icites/
Water I.hte Present, Yes No DepM::n.=-
Sal—hon Present? Yes_No__ Depth(inches) (Wetland Hydrology Present? Yes_ No_ J
ncudes eapan ol hmye)-....___ _
Describe Recorded Data(stream gauge.monitoring well aerial pholos.previous inspections).d astable - {
)
US Army Corps of Engineers Westem Mountains Valleys.and Coast-Version 2 0
23
Project: 2023-WR-007 December 2023 Arctos Environrnen+ol LLG
EIM Water Quality Atlas Map
L.g" m, zoom TOWS A« AaWR nwe M. 0+ *s•r r+em a" Os— ( n
tl
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Figure 3:Screen Capture of Washington State Department of Ecology's Water Quality Atlas with 303d water designations
visible.
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ECOLOGY Water Quality Atlas Map .
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« 4pov.CM W.eerN.J lit SIr0.q.et FervApmnN .a1wu ye .ye
D.la trxopareriry 0 109:
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Figure 4:Screen Capture of Washington State Department of Ecology Water Quality Atlas with TMDL water quality
improvement projects data visible.
24
Project: 2023-WR-007 December 2023 flrctos Environwental LLG
0-,
M� o• � >. ➢z ss •
M nos..... O• ��'., a� �:. -
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ilM.�warn., o• r.�," rY'iw >_,: .algry,F.;yI�.,, `.
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Figure 5:Screen capture of the National Wetland Inventory(NWI)online mapper for this area.
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Ha Harst ne 32-0 16.6% j t�
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ndy loam 6
to 15 Dercent
slopes (!
1 Kd KitSaP sATY 0.6 0.3%
f4 claY loam,0 to
5 percentf. O
slopes
- ! Rb Rough broken 17.5 9.1%
land
So Sinda�r shotty 47.1 24.4%
loam,5 to 15
percent slopes
SP Sinclair Thotty 17.6 9.1%
loam,35 to 30
percent slopes a ID
to
Figure 6:Screen capture of the USDA web soil survey for this area.
25
Project: 2023-WR-007 December 2023 Aretos Environrrien+nl LLG
*r A
R�Rw e •
q
A
A.
m E—raex„aNwr,v�m ...
m R.4--kanda.a ...
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m Mi<
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m Rou.tleries ...
m DNR Ma�e tx,4..e eo 1 ... sch raic NA. ... ccxnnron NA. .�•rENr m= +wM�.trP= ... ,.e r
BaV hnRa,mna-:a .•e m� -nr xees +=, NT Bwn:ca. v giant S
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Figure 7:Screen capture of the WA Natural Heritage Program Data Explorer Map for this area(formally the WA DNR Wetlands
of High Conservation Value Map.
c
v
- Ho•xae�e+nwe
oe r`
.�
cl
Figure 8:Screen capture of the WDFW Priority Habitats and Species web mapper for this area.
26
Project: 2023-WR-007 December 2023 Ara+os Envirawrnen+d LLG
J;
a�
t
Figure 9:Map of the land use intensity 1km around the wetland.
27
Project: 2023-WR-007 December 2023 Rrctos Environmental LLG
e1 # '•_ '`xy .~Vte r`. .•', ` r- 49
x
'�}�, ~ a. i4'y T ''J �. � ��'4�` •4 k�1b Jam.
V'.
Figure 10:Map showing the different Cowardin cover classes and hydroperiods within the wetland.The yellow line is 150ft from
the wetland edge for reference and scoring the functions of the wetland.The two streams on the north end of the wetland are
the wetland outlets.
28
Project: 2023-WR-007 December 2023 Arc+os Environmentai LLG
a. a
y `
24'rn. �F
y �7
-. _•mot. -,nq,+w. �' .c ..- ` 4� �� "air .. � -z. s' ..�,�f
n t
r� � `• ���\,�\may � 1;j �, ����
Site Photo 1:Image of the wetland area on the south side of the newly installed driveway.
29
Project:2023-WR-007 December 2023 Arc+os Environmental LLG
-
� fit
� J
tr vt y `•
n +q..
AMP
x '
Site Photo 2:Image of the wetland area on the north side of the newly installed driveway.
30
Project: 2023-WR-007 December 2023 flrctos EnNirawnen+al LLG
i' s� �� � r.a+•f � � t � s
Site Photo 3:Image of the wetland area on the south side of the newly installed driveway.
31
Project: 2023-WR-007 December 2023 Arc+os Environmental LLG
Aga
OA
r
1w
r t �
5 T -'�� j K -~�•+i.+" +Kj"s��. Y',�jid'��"'rya '� h -£' _
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- '" �_ ��'+- � az�. -`R '4►.? +i-! d. � !'�% yam= �-�
Site Photo 4:Image of the newly installed driveway that crosses the Category 111 wetland.
32
Legend
10ft Wetland >' o
.o►." - d
Streams
Environmental Consulting Drone Imagery
PO Box 2466
Shelton, WA 98584
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1
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;w Map created by: Rob Nagel
Decemberi
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This is not a survey map.